From Chapter 3:
One of the most curious of the early publications on tobacco, in which an attempt is made to hold the balance fairly between the legitimate use and the "licentious" abuse of the herb, is Tobias Venner's tract with the long-winded title: "A Brief and Accurate Treatise concerning The taking of the Fume of tobacco, Which very many, in these dayes doe too licenciously use. In which the immoderate, irregular, and unseasonable use thereof is reprehended, and the true nature and best manner of using it, perspicuously demonstrated." Venner described himself as a doctor of physic in Bath, and his tract was published in London in 1637. Venner says that tobacco is of "ineffable force" for the rapid healing of wounds, cuts, sores and so on, by external application, but thinks little of its use for any other purpose. Like others of his school, he attacks the "licentious Tobacconists [smokers] who spend and consume, not only their time, but also their health, wealth, and witts in taking of this loathsome and unsavorie fume." He admits the popularity of the herb, but expresses his own personal objection to the "detestable savour or smack that it leaveth behind upon the taking of it"; from which one is inclined to surmise that the doctor's first pipe was not an entire success. With an evident desire to be fair, Venner, notwithstanding his dislike of the "savour," refuses to condemn tobacco utterly, because of what he considers its valuable medicinal qualities, and he goes so far as to give "10 precepts in the use of" tobacco. The sixth is "that you drink not between the taking of the fumes, as our idle and smoakie Tobacconists are wont"—there must be no alliance, in short, between the pipe and the cheerful glass. The tenth and last precept is "that you goe not abroad into the aire presently [immediately] upon the taking of the fume, but rather refrain therefrom the space of halfe an houre, or more, especially if the season be cold, or moist." The suggestion that the smoker, when he has finished his pipe, shall wait for half an hour or so before he ventures into the outer air is very quaint.

From Chapter 15:
Before the end of the seventeenth century, however, the signs were ceasing to have any necessary association with the trade carried on under them, and tobacconists are found with shop-signs which had no reference in any way to tobacco. For instance, to take a few examples from the late Mr. Hilton Price's lists of "Signs of Old London" from Cheapside and adjacent streets, in 1695 John Arundell, tobacconist, was at the "White Horse," Wood Street; in the same year J. Mumford, tobacconist, was at the "Faulcon," Laurence Lane; in 1699 Mr. Brutton, tobacconist, was to be found at the "Three Crowns," under the Royal Exchange; in 1702 Richard Bronas, tobacconist, was at the "Horse Shoe," Bread Street; and in 1766 Mr. Hoppie, of the "Oil Jar: Old Change, Watling Street End," advertised that he "sold a newly invented phosphorus powder for lighting pipes quickly in about half a minute. Ask for a Bottle of Thunder Powder."

Again, in Fleet Street, Mr. Townsend, tobacconist, traded in 1672 at the "Three Golden Balls," near St. Dunstan's Church; while at the end of Fetter Lane, a few years later, John Newland, tobacconist, was to be found at the "King's Head."